Used as a key intermediate in Suzuki-Miyaura cross-coupling reactions for the synthesis of biaryl compounds in pharmaceutical and agrochemical research. Its boronic acid functionality enables efficient carbon-carbon bond formation under mild conditions. Particularly valuable in the development of novel pyrimidine-based drug candidates due to its ability to introduce functionalized heteroaromatic moieties. Also employed in the preparation of kinase inhibitors and other bioactive molecules where the butylthio group contributes to lipophilicity and membrane permeability.